Can I replace a 205/70R15 Tire with a 205/65R15 Tire

I have two 205/65R15 Tires and I recently got a flat on my car which has 205/70R15 tires I was wondering if I use those tires to replace two of my tires on my car. So basicly I would have two 205/65R15 tires in the front and two 205/70R15 tires in the rear?

No. They're almost an inch shorter and will screw up the ABS. 205/70-15 can be replaced with 225/65-15 if you have 6" or wider wheels.
..2011 Cadillac CTS-V Black Diamond EditionJust your average 650hp "luxury" sedan

atvman:You could replace all four tires with the smaller size, but I wouldn't do just two.

Right, cause even then, you'd have to recalibrate your odometer & speedometer on account of the smaller overall diameter. Just try to stick with the same size.
____________________Because it totally worked when Lincoln did it.

Correct, I went up one size on the Mustang and there is no discernible difference on the speedo
________________________________________Current:1991 Chevrolet Silverado - Old Blue 107,000 Miles2004 GMC Sierra SLT - 162,000 Miles

atvman:You could replace all four tires with the smaller size, but I wouldn't do just two.

TypeSH:Right, cause even then, you'd have to recalibrate your odometer & speedometer on account of the smaller overall diameter. Just try to stick with the same size.

atvman:Going up or down one size will have a minimal impact on them.

But the sidewall/aspect ratio going from 65% to 70% is a bigger difference on a 205mm wide tire, than doing it with a 185mm wide tire (for example). Aspect ratio is the percentage of how wide a tire is. In the case of a 205 tire, the differences between 133.25mm (stock) versus 143.5mm is a good 10.25mm off the sidewall.

Doing it with a thinner tire (Pheobe's size) 185, the difference of 65% and 70% is 120.25mm, and 129.5mm (9.25). Not a big deal, but you get the idea-- aspect ratio is percentages, so 5% here isn't the same as 5% elsewhere.

Going with the 225/65-15 like Jeep said, the sidewall is 146.25 thick, rather than 133.25-- a more minimal amount. Stock is best, but lesser of two evils there, and the tire shop should have known better. However also going this way, the sidewall is indeed thicker, but still not as much.
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